A random sample of 50 observations yielded the following frequencies for the standardized intervals

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A random sample of 50 observations yielded the following frequencies for the standardized intervals:

Interval Frequency
Z ≤ - 1 6
-1 < Z ≤ 0 27
0 < Z ≤ 1 14
Z >1 3

Can we infer that the data are not normal? Use α = .10.

 

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